STARLINK-35999, 66951
Orbit data source: Space-Track
STARLINK-35999, 66951 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 07 Dec 2025 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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66951 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK V2MO, Unknown motor
Mass
575 kg wet, ~530 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 17.7 m
Radar Cross Section
36.964 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 STARLINK-35999
1 66951U 25286AC 26171.44444014 .00019090 00000-0 57446-3 0 9990
2 66951 53.1584 240.1197 0000732 80.3420 279.7666 15.34411948 31162Epoch: 2026-06-20T10:39Z
TLE epoch observation values (Epoch: 2026-06-20T10:39:59.628Z)
Latitude
0.00006°
Longitude
171.46232°
Altitude
463.484 km
Speed
7.636 km/s
True Right ascension
16h 00m 28s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
07:16:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
463.426 km
Perigee altitude
462.424 km
Semi-major axis
6,841.062 km
Eccentricity
0.00007
Inclination
53.1584°
RAAN
240.1197°
Arg. of periapsis
80.342°
True anomaly
279.75833°
Mean anomaly
279.7666°
Eccentric anomaly
279.76247°
Mean motion
3.83582 °/min
Orbital period
93.85 mins
BSTAR
0.00057446
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Other satellites on launch #286 in the year 2025 (2025-12-07 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.STARLINK-35999 Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-21 07:09:32.383Z | 222.449° SW | 2026-06-21 07:12:32.383Z | 181.007° SSW | 43.007° | 2026-06-21 07:15:32.383Z | 54.555° ENE |
| 5 mins | 2026-06-21 13:44:32.383Z | 322.204° NNW | 2026-06-21 13:46:32.383Z | 20.139° NNE | 40.508° | 2026-06-21 13:49:32.383Z | 115.77° SE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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